--- product_id: 103795985 title: "553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge" brand: "caleffi" price: "¥20786" currency: JPY in_stock: true reviews_count: 8 category: "Caleffi" url: https://www.desertcart.jp/products/103795985-553140-automatic-filling-unit-1-2-with-manual-cock-strainer store_origin: JP region: Japan --- # Built-in pressure gauge Operates up to 70°C Auto-fill precision 553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge **Brand:** caleffi **Price:** ¥20786 **Availability:** ✅ In Stock ## Summary > ⚙️ Stay ahead with precision plumbing — because every bar counts! ## Quick Answers - **What is this?** 553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge by caleffi - **How much does it cost?** ¥20786 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/103795985-553140-automatic-filling-unit-1-2-with-manual-cock-strainer) ## Best For - caleffi enthusiasts ## Why This Product - Trusted caleffi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **High-Pressure Endurance:** Handles up to 16 bar max operating pressure, built to withstand demanding environments. - • **Robust & Reliable Build:** Crafted from premium metal with calcification-resistant internals for long-lasting performance. - • **Sleek Italian Engineering:** Gold finish and compact design from Caleffi, blending style with professional-grade functionality. - • **Effortless Precision Filling:** Automatic filling unit with a manual cock for ultimate control and convenience. - • **Real-Time Pressure Monitoring:** Integrated pressure gauge ensures you never miss the perfect setting between 0.3 - 4 bar. ## Overview The Caleffi 553140 Automatic Filling Unit is a compact, 1/2 inch threaded fitting designed for precise water level management. Featuring a manual cock, strainer, check valve, and an integrated pressure gauge with an adjustable range of 0.3 to 4 bar, it supports a maximum operating pressure of 16 bar and temperatures up to 70°C. Its calcification-resistant internals and premium metal construction ensure durability and reliable performance, making it a trusted choice for professional plumbing applications. ## Description 553140 Automatic filling unit with pressure gauge Caleffi 1/2 inch with pressure gauge. Automatic filling unit with tap, filter, check valve. With pressure gauge. Adjustment range: 0.3 ÷ 4 bar. Input Pmax: 16 bar. Operating temperature: 70 °C. Review: Very satisfied - My item was on time on the specified day all good Review: Tweaking take a lot of time but it does the job - It delivers what it says on the tin. The only note I have is that the pressure tweaking (right desired pressure) will take you long time. The result of a regulation is visible after hours, so be patient and don't rush in changing too much too quickly. ## Features - Automatic filling fitting, calcification-resistant internal preset - With pressure gauge - Adjustment range: 0.3 - 4 bar - Max. Operating pressure: 16 bar - Max. Operating temperature: 70 °C ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B009L4HU72 | | Brand | Caleffi | | Colour | Gold | | Connector Type | Threaded Fitting (NPT) | | Connector type | Threaded Fitting (NPT) | | Country of Origin | Italy | | Customer Reviews | 4.7 out of 5 stars 33 Reviews | | Exterior Finish | Gold | | Item Weight | 0.5 Kilograms | | Manufacturer | CALEFFI | | Material | Metal (such as brass or bronze) | | Model Number | 553140 | | Number of Pieces | 1 | | Part Number | 553140 | | Set Name | Automatic Filling Group | | Size | Piccolo | | Thread Size | 0.5 inch | | Thread Type | NPT | | Thread size | 0.5 inch | | Unit Count | 1.0 count | ## Product Details - **Brand:** Caleffi - **Colour:** Gold - **Connector type:** Threaded Fitting (NPT) - **Exterior finish:** Gold - **Item weight:** 0.5 Kilograms - **Material:** Metal (such as brass or bronze) - **Number of pieces:** 1 - **Size:** Piccolo - **Thread size:** 0.5 inch - **Thread type:** NPT ## Images ![553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge - Image 1](https://m.media-amazon.com/images/I/61xSjmHsJQL.jpg) ## Questions & Answers **Q: What’s the max flow rate through this thing? My combi system has cold leak of 0.5bar/8hr. This valve doesn’t seem to raise the pressure at all.** A: I have no problem with this valve it appears to have a good flow and did not need setting from memory the grey knob is a shut off, check the direction, you would have have two isolation valves in the system before fitting check them. The quarter turn plastic lever ones I have seen them strip and stay shut. Could be the strainer basket is blocked. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very satisfied *by K***R on 17 October 2025* My item was on time on the specified day all good ### ⭐⭐⭐⭐ Tweaking take a lot of time but it does the job *by S***O on 16 November 2024* It delivers what it says on the tin. The only note I have is that the pressure tweaking (right desired pressure) will take you long time. The result of a regulation is visible after hours, so be patient and don't rush in changing too much too quickly. ### ⭐⭐⭐⭐⭐ Good value and and well made *by Z***. on 12 May 2025* The first one was faulty but immediately replaced without fuss by the seller. It was a like for like replacement part by the same manufacturer and used to refurbish an old pressurisation unit in a commercial system. It has been working faultlessly now for nearly two years. ## Frequently Bought Together - Caleffi 553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge - 1/2" x 1/2" inch Union Pipe Connection Pipe Nipple Wire Carpenter Brass Fitting BSP Male --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/103795985-553140-automatic-filling-unit-1-2-with-manual-cock-strainer](https://www.desertcart.jp/products/103795985-553140-automatic-filling-unit-1-2-with-manual-cock-strainer) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-14*